Don't mean to revive this but my original plan to get the Athena is now a bit of a problem as Athena does not sell 'loose' but as a set. Therefore, to be fair to the vendor, I didnt' think it was worth opening another set just for me. Hence, he proposed Energy again, but this time the Take 5.2 series. I assume this would be better in that I believe it has a higher rating & that it would match the 2500 better? Anyone has any comments on this?